The Tantramar Marshes also known as the Tintamarre National Wildlife Area is a tidal saltmarsh around the Bay of Fundy on the Isthmus of Chignecto. The area borders between Route 940, Route 16 and Route 2 near Sackville, New Brunswick.
At 20,230 hectares, the marsh is one of the largest on the Atlantic coast of North America. The marshes are an important stopover for migrating waterfowl such as semi-palmated sandpipers and Canada geese. Now a National Wildlife Area the marshes are the site of two bird sanctuaries.
The name Tantramar is derived from the Acadian French tintamarre, meaning 'din' or 'racket', a reference to the noisy flocks of birds which feed there.
The landscape of the Tantramar Marshes has provided subject matter for the poets Charles G.D. Roberts, Bliss Carman and Douglas Lochhead, painter Alex Colville and photographer Thaddeus Holownia.
Communities on or bordering the marshes include, in New Brunswick: Aulac and Sackville, and on the Nova Scotia side: Amherst, and Fort Lawrence.